/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

#ifndef OMNISTREAM_HASHMAPSTATEBACKEND
#define OMNISTREAM_HASHMAPSTATEBACKEND

#include <set>
#include "runtime/state/StateBackend.h"

class HashMapStateBackend : public StateBackend {
public:
    HashMapStateBackend() {};

    template <typename K>
    AbstractKeyedStateBackend<K> *createKeyedStateBackend(
        omnistream::EnvironmentV2 *env,
        std::set<KeyedStateHandle> stateHandles,
        KeyGroupRange *keyGroupRange,
        TypeSerializer *keySerializer,
        int numberOfKeyGroups);

private:
    void restoreState();
};

#endif // OMNISTREAM_HASHMAPSTATEBACKEND